<script>
import { findBrand } from '@/api/home';
import HomePanel from './home-panel.vue'
import { ref } from "vue";
import XtxSkeleton from './library/xtx-skeleton.vue';
import { useLazyData } from '@/hooks';
export default {
  name: 'HomeBrand',
  components: { 
    HomePanel,
    XtxSkeleton
 },
  setup(){
    // const brands = ref([])
    // findBrand(10).then(data=>{
    //     brands.value = data.result
    // })
    const index = ref(0)
    const toggle=(step)=>{
        const newIndex = index.value + step
        if(newIndex < 0 || newIndex > 1) return
        index.value = newIndex
    }
    const {target,result} = useLazyData(()=>findBrand(10))
    return {brands:result,toggle,index,target}
  }
}
</script>

<template>
<HomePanel title="热门品牌" sub-title="国际经典 品质保证">
    <template v-slot:right>
      <a href="javascript:;" class="iconfont icon-angle-left prev" @click="toggle(-1)" :class="{disabled:index===0}"></a>
      <a href="javascript:;" class="iconfont icon-angle-right next" @click="toggle(1)" :class="{disabled:index===1}"></a>
    </template>
    <div class="box" ref="target">
        <Transition name="fade">
            <ul class="list" v-if="brands.length" :style="{transform:`translateX(${-index*1240}px)`}">
                <li v-for="item in brands" :key="item.id">
                <RouterLink to="/">
                    <img :src="item.picture" alt="">
                </RouterLink>
                </li>
            </ul>
            <div v-else class="skeleton">
                <XtxSkeleton class="item" v-for="i in 5" :key="i" animated bg="#e4e4e4" width="240px" height="305px"/>
            </div>   
        </Transition>
      
    </div>
</HomePanel>
</template>

<style scoped lang="less">
@import '@/assets/styles/variables.less';
.home-panel {
  background:#f5f5f5
}
.iconfont {
  width: 20px;
  height: 20px;
  background: #ccc;
  color: #fff;
  display: inline-block;
  text-align: center;
  margin-left: 5px;
  background: @xtxColor;
  &::before {
    font-size: 12px;
    position: relative;
    top: -2px
  }
  &.disabled {
    background: #ccc;
    cursor: not-allowed;
  }
}
.box {
  display: flex;
  width: 100%;
  height: 345px;
  overflow: hidden;
  padding-bottom: 40px;
  .list {
    width: 200%;
    display: flex;
    transition: all 1s;
    li {
      margin-right: 10px;
      width: 240px;
      &:nth-child(5n) {
        margin-right: 0;
      }
      img {
        width: 240px;
        height: 305px;
      }
    }
  }
}

.skeleton {
    width: 100%;
    display: flex;
    .item {
      margin-right: 10px;
      &:nth-child(5n) {
        margin-right: 0;
      }
    }
  }
</style>